- add option to enable/disable smart paste

- add shortcut to paste smartly
- use electron's clipboard

browser/components/MarkdownEditor.js

@@ -278,6 +278,8 @@ class MarkdownEditor extends React.Component {
           onChange={(e) => this.handleChange(e)}
           onBlur={(e) => this.handleBlur(e)}
           spellCheck={config.editor.spellcheck}
+          enableSmartPaste={config.editor.enableSmartPaste}
+          hotkey={config.hotkey}
         />
         <MarkdownPreview styleName={this.state.status === 'PREVIEW'
             ? 'preview'